AS7018 72.156.176.0/20 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 4094Addressable IPs: 409672.156.176.0/2472.156.177.0/2472.156.178.0/2472.156.179.0/2472.156.180.0/2472.156.181.0/2472.156.182.0/2472.156.183.0/2472.156.184.0/2472.156.185.0/2472.156.186.0/2472.156.187.0/2472.156.188.0/2472.156.189.0/2472.156.190.0/2472.156.191.0/24